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Side Hustle Tax Checker for US Students

Check whether you need to tell the tax office about side income, and get a rough idea of the tax.

Figures last checked 18 October 2026

An estimate, not tax advice. It is based on the 2025 Schedule SE and IRS guidance checked on 18 October 2026. The IRS publishes a new form each year, so check the current one. Nothing you enter is saved or sent anywhere.

Everything you received from self-employment or gig work, such as tutoring, delivery or freelance work. A form from a company is not needed for it to count.

Allowable costs of earning the income, such as supplies or equipment.

Enter your side income to see the result.

How this checker works

  • Your net profit is your side income minus your business costs.
  • Your net earnings from self-employment are 92.35% of your net profit (line 4a of Schedule SE).
  • If your net earnings are less than $400, you do not owe self-employment tax (line 4c). In terms of profit, that is about $434.
  • Self-employment tax is 12.4% for Social Security plus 2.9% for Medicare, 15.3% in total, on your net earnings. This estimate assumes your total earnings are below the Social Security limit, which is true for most students.
  • Half of your self-employment tax is deductible when you work out your income tax (line 13).
  • The IRS says individuals, including sole proprietors, generally have to make estimated tax payments if they expect to owe tax of $1,000 or more when their return is filed.

What it does not include

  • Federal or state income tax. Whether you need to file a return depends on your total income and situation. The IRS Interactive Tax Assistant can help you check.
  • The 0.9% Additional Medicare Tax for higher earners, the optional methods on Schedule SE, and wages from a job that use up the Social Security limit.
  • Nonresident alien rules. If you are on an F-1 or J-1 visa, ask your school's international student office before you earn money.

Sources

  1. IRS: Schedule SE (Form 1040), 2025
  2. IRS: Instructions for Schedule SE (Form 1040)
  3. IRS: Self-employment tax (Social Security and Medicare taxes)
  4. IRS: Estimated taxes
  5. IRS: Interactive Tax Assistant

Figures last checked on 18 October 2026. They change, so check the official source before you act.

Read the guide: do college students pay taxes on side hustle money?

Also available for: UK

This calculator gives estimates for general information. It is not financial, legal or tax advice.